<template>
	<view class="con-body">
		<!-- 商品列表 -->
		<view class="goods-list">
			<view class="tis" v-if="showEmpty == true || goodsList.length == 0" style="margin-top: 400rpx;">
				<u-empty mode="car" icon="https://resourse.cnlhjt.com/upload/20220827/b8dc4f9e7283587f59b9b0dc805e8737.png">
				</u-empty>
			</view>
			<view class="row" v-for="(row,index) in goodsList" :key="index">
				<!-- 删除按钮 -->
				<view class="menu" @tap.stop="deleteGoods(row.id)">
					<view class="icon" style="color: aliceblue;">删除</view>
				</view>
				<!-- 商品 -->
				<view class="carrier" :class="[theIndex==index?'open':oldIndex==index?'close':'']"
					@touchstart="touchStart(index,$event)" @touchmove="touchMove(index,$event)"
					@touchend="touchEnd(index,$event)">
					<!-- checkbox -->
					<view class="checkbox-box" @tap="selected(index)">
						<view class="checkbox">
							<view :class="[row.selected?'on':'']"></view>
						</view>
					</view>
					<!-- 商品信息 -->
					<view class="goods-info" @tap="toGoods(row)">
						<view class="img">
							<image :src="row.img"></image>
						</view>
						<view class="info">
							<view class="title">{{row.name}}</view>
							<view class="spec">{{row.spec}}</view>
							<view class="price-number">
								<view class="price">￥{{row.price}}</view>
								<view class="number">
									<view class="sub" @tap.stop="sub(index)">
										<view class="icon jian">-</view>
									</view>
									<view class="input" @tap.stop="discard">
										<input type="number" v-model="row.number" @input="sum($event,index)"
											@change="numberChange(index)" />
									</view>
									<view class="add" @tap.stop="add(index)">
										<view class="icon jia">+</view>
									</view>
								</view>
							</view>
						</view>
					</view>
				</view>
			</view>
		</view>

		<!-- 推荐产品 -->
		<view class="recommend">
			<view class="titile u-flex" style="text-align: center;">
				<image src="/static/icon/titile_left.png"></image>
				<text>为您推荐</text>
				<image src="/static/icon/titile_right.png"></image>
			</view>

			<view class="uni-flex-center">
				<u-grid :border="false" col="2">
					<u-grid-item v-for="(item,index) in recommendGoodsList" :key="index"
						:customStyle="{width: '46%', marginLeft: '2%', marginRight:'2%',}">
						<view class="main-service" style="min-width: 100%; overflow: hidden;padding: 10rpx 8rpx;"
							@click="goodDetail(item.id, item.sid)">
							<u-image :src="item.icon" :lazy-load="true" width="98%" height="300rpx"
								:customStyle="{marginTop: '10rpx', marginLeft:'2%', borderRadius:'20rpx'}"
								mode="scaleToFill"></u-image>
							<view>
								<view style="margin-top: 10rpx; padding: 0rpx 10rpx;">
									<text style="font-size: 30rpx;">{{item.name}}</text>
								</view>
								<view style="margin-top: 2rpx;">
									<view style="display: inline-flex; text-overflow: ellipsis;">
										<text class="u-line-1"
											style="color:#E35719; display: flex; margin-left: 15rpx; font-size: 20rpx;">{{item.marks}}</text>
									</view>
								</view>
								<view style="margin-top: 3rpx;">
									<view style="display: inline-flex; text-overflow: ellipsis;">
										<text class="u-line-1"
											style="color:#999999; display: flex; margin-left: 15rpx; font-size: 22rpx;">{{item.remark}}</text>
									</view>
								</view>
								<text
									style=" color: #E35719; font-size: 20rpx; margin-left: 5rpx;  padding: 0 5rpx;border: 1rpx solid #E35719; border-radius: 6rpx;">售{{item.sales}}</text>
								<text
									style=" color: forestgreen; font-size: 20rpx; margin-left: 5rpx; padding: 0 5rpx; border: 1rpx solid forestgreen; border-radius: 6rpx;">评{{item.good}}</text>
								<text
									style=" color: #999; font-size: 20rpx; margin-left: 5rpx; padding: 0 5rpx; border: 1rpx solid #999; border-radius: 6rpx;">存{{item.stock}}</text>
								<view style="margin: 10rpx 0rpx;">
									<u-line dashed color="#999999"></u-line>
								</view>
								<view>
									<view style=" width: 100%;">
										<text
											style="float: left; color: red; font-size: 36rpx; font-weight: 800;">￥{{item.price}}</text>
										<text
											style="float: left; color: #9e9e9e; font-size: 22rpx; text-decoration: line-through; margin-left: 10rpx;">￥{{item.oriPrice}}</text>
									</view>
								</view>
							</view>
						</view>

					</u-grid-item>
				</u-grid>
			</view>
			<u-loadmore :status="status" />
		</view>

		<!-- 脚部菜单 -->
		<view class="footer" :style="{bottom:footerbottom}" v-if="showEmpty == false || goodsList.length > 0">
			<view class="checkbox-box" @tap="allSelect">
				<view class="checkbox">
					<view :class="[isAllselected?'on':'']"></view>
				</view>
				<view class="text">全选</view>
			</view>
			<view class="delBtn" @tap="deleteList" v-if="selectedList.length>0">删除</view>
			<view class="settlement">
				<view class="sum">合计:<view class="money">￥{{sumPrice}}</view>
				</view>
				<view class="btn" @tap="toConfirmation">结算({{selectedList.length}})</view>
			</view>
		</view>
	</view>
</template>

<script>
	import {
		getCart,
		removeCart,
		clearCart,
		numChangeCart,
		recommendGoods
	} from "@/service/shopservice.js";
	export default {
		data() {
			return {
				sumPrice: '0.00',
				headerPosition: "fixed",
				headerTop: null,
				statusTop: null,
				showHeader: true,
				selectedList: [],
				isAllselected: false,
				goodsList: [],
				//控制滑动效果
				theIndex: null,
				oldIndex: null,
				isStop: false,
				top: {},
				showEmpty: false,
				recommendGoodsList: [],
				limit: 20,
				page: 1,
				status: 'loadmore',
				footerbottom:2,
			}
		},
		onPageScroll(e) {
			//兼容iOS端下拉时顶部漂移
			this.headerPosition = e.scrollTop >= 0 ? "fixed" : "absolute";
			this.headerTop = e.scrollTop >= 0 ? null : 0;
			this.statusTop = e.scrollTop >= 0 ? null : -this.statusHeight + 'px';
		},
		//下拉刷新，需要自己在page.json文件中配置开启页面下拉刷新 "enablePullDownRefresh": true
		onPullDownRefresh() {
			setTimeout(function() {
				uni.stopPullDownRefresh();
			}, 1000);
		},

		onReachBottom() {
			// console.log(123123);
			if (this.status == 'nomore') return;
			this.status = 'loading';
			this.page = ++this.page;
			recommendGoods({
				page: this.page,
				limit: this.limit
			}).then(this.getGoodsList);
		},
		mounted() {
			getCart().then(this.getCart);
			recommendGoods({
				page: this.page,
				limit: this.limit
			}).then(this.getGoodsList);
			this.getSystemInfo()
			//兼容H5下结算条位置
			// #ifdef H5
			this.footerbottom = document.getElementsByTagName('uni-tabbar')[0].offsetHeight + 'px';
			// #endif
			// #ifdef APP-PLUS
			this.showHeader = false;
			this.statusHeight = plus.navigator.getStatusbarHeight();
			// #endif
		},
		methods: {
			getGoodsList(e) {
				if (e.code == 200) {
					let list = e.result;
					list.forEach(item => {
						this.recommendGoodsList.push(item)
					})
					if (list.length < this.limit) this.status = 'nomore';
				} else {
					this.status = 'nomore';
				}
			},
			getCart(e) {
				if (e.code == 200) {
					this.showempty = false;
					this.goodsList = e.result;
				} else {
					this.showEmpty = true;
				}
			},
			goodDetail(id, sid) {
				this.$u.route({
					url: '/pagesShop/nav/good-detail',
					params: {
						gid: id,
						sid: sid
					}
				})
			},
			//加入商品 参数 goods:商品数据
			joinGoods(goods) {
				/*
				 * 这里只是展示一种添加逻辑，模板并没有做从其他页面加入商品到购物车的具体动作，
				 * 在实际应用上，前端并不会直接插入记录到goodsList这一个动作，一般是更新列表和本地列表缓存。
				 * 一般商城购物车的增删改动作是由后端来完成的,
				 * 后端记录后返回前端更新前端缓存
				 */
				let len = this.goodsList.length;
				let isFind = false; //是否找到ID一样的商品
				for (let i = 0; i < len; i++) {
					let row = this.goodsList[i];
					if (row.id == goods.id) { //找到商品一样的商品
						this.goodsList[i].number++; //数量自增
						isFind = true; //找到一样的商品
						break; //跳出循环
					}
				}
				if (!isFind) {
					//没有找到一样的商品，新增一行到购物车商品列表头部
					this.goodsList[i].unshift(goods);
				}
			},
			//控制左滑删除效果-begin
			touchStart(index, event) {
				//多点触控不触发
				if (event.touches.length > 1) {
					this.isStop = true;
					return;
				}
				this.oldIndex = this.theIndex;
				this.theIndex = null;
				//初始坐标
				this.initXY = [event.touches[0].pageX, event.touches[0].pageY];
			},
			touchMove(index, event) {
				//多点触控不触发
				if (event.touches.length > 1) {
					this.isStop = true;
					return;
				}
				let moveX = event.touches[0].pageX - this.initXY[0];
				let moveY = event.touches[0].pageY - this.initXY[1];

				if (this.isStop || Math.abs(moveX) < 5) {
					return;
				}
				if (Math.abs(moveY) > Math.abs(moveX)) {
					// 竖向滑动-不触发左滑效果
					this.isStop = true;
					return;
				}

				if (moveX < 0) {
					this.theIndex = index;
					this.isStop = true;
				} else if (moveX > 0) {
					if (this.theIndex != null && this.oldIndex == this.theIndex) {
						this.oldIndex = index;
						this.theIndex = null;
						this.isStop = true;
						setTimeout(() => {
							this.oldIndex = null;
						}, 150)
					}
				}
			},
			touchEnd(index, $event) {
				//结束禁止触发效果
				this.isStop = false;
			},
			//控制左滑删除效果-end


			//商品跳转
			toGoods(e) {
				this.$u.route({
					url: '/pagesShop/nav/good-detail',
					params: {
						gid: e.gid,
						sid: e.sid
					}
				})
			},
			//跳转确认订单页面
			toConfirmation() {
				let tmpList = [];
				let len = this.goodsList.length;
				for (let i = 0; i < len; i++) {
					if (this.goodsList[i].selected) {
						tmpList.push(this.goodsList[i]);
					}
				}
				if (tmpList.length < 1) {
					uni.showToast({
						title: '请选择商品结算',
						icon: 'none'
					});
					return;
				}
				uni.setStorage({
					key: 'buylist',
					data: tmpList,
					success: () => {
						uni.navigateTo({
							url: '../../order/confirmation'
						})
					}
				})
			},
			//删除商品
			deleteGoods(id) {
				removeCart({
					id: id
				}).then(res => {
					if (res.code == 200) {
						uni.showToast({
							title: res.msg,
							icon: "success"
						});
						let len = this.goodsList.length;
						for (let i = 0; i < len; i++) {
							if (id == this.goodsList[i].id) {
								this.goodsList.splice(i, 1);
								break;
							}
						}
						this.selectedList.splice(this.selectedList.indexOf(id), 1);
						this.sum();
						this.oldIndex = null;
						this.theIndex = null;
					}
				})


			},
			// 删除商品s
			deleteList() {
				clearCart({
					ids: this.selectedList
				}).then(res => {
					if (res.code == 200) {
						uni.showToast({
							title: res.msg,
							icon: "success"
						});
						let len = this.selectedList.length;
						while (this.selectedList.length > 0) {
							console.log(this.selectedList[0]);
							this.deleteGoods1(this.selectedList[0]);
						}
						this.selectedList = [];
						this.isAllselected = this.selectedList.length == this.goodsList.length && this.goodsList
							.length > 0;
						this.sum();
					} else {
						uni.showToast({
							title: res.msg,
							icon: "error"
						});
					}
				})

			},
			deleteGoods1(id) {
				let len = this.goodsList.length;
				for (let i = 0; i < len; i++) {
					if (id == this.goodsList[i].id) {
						this.goodsList.splice(i, 1);
						break;
					}
				}
				this.selectedList.splice(this.selectedList.indexOf(id), 1);
				this.sum();
				this.oldIndex = null;
				this.theIndex = null;
			},
			// 选中商品
			selected(index) {
				this.goodsList[index].selected = this.goodsList[index].selected ? false : true;
				let i = this.selectedList.indexOf(this.goodsList[index].id);
				i > -1 ? this.selectedList.splice(i, 1) : this.selectedList.push(this.goodsList[index].id);
				this.isAllselected = this.selectedList.length == this.goodsList.length;
				this.sum();
			},
			//全选
			allSelect() {
				let len = this.goodsList.length;
				let arr = [];
				for (let i = 0; i < len; i++) {
					this.goodsList[i].selected = this.isAllselected ? false : true;
					arr.push(this.goodsList[i].id);
				}
				this.selectedList = this.isAllselected ? [] : arr;
				this.isAllselected = this.isAllselected || this.goodsList.length == 0 ? false : true;
				this.sum();
			},
			// 减少数量
			sub(index) {
				if (this.goodsList[index].number <= 1) {
					return;
				}
				this.goodsList[index].number--;
				numChangeCart({
					id: this.goodsList[index].id,
					num: this.goodsList[index].number
				}).then(res => {
					if (res.code != 200) {
						uni.showToast({
							title: res.msg,
							icon: "error"
						});
					}
				});
				this.sum();
			},
			// 增加数量
			add(index) {
				this.goodsList[index].number++;
				numChangeCart({
					id: this.goodsList[index].id,
					num: this.goodsList[index].number
				}).then(res => {
					if (res.code != 200) {
						uni.showToast({
							title: res.msg,
							icon: "error"
						});
					}
				});
				this.sum();
			},
			numberChange(index) {
				numChangeCart({
					id: this.goodsList[index].id,
					num: this.goodsList[index].number
				}).then(res => {
					if (res.code != 200) {
						uni.showToast({
							title: res.msg,
							icon: "error"
						});
					}
				});
				this.sum();
			},
			// 合计
			sum(e, index) {
				this.sumPrice = 0;
				let len = this.goodsList.length;
				for (let i = 0; i < len; i++) {
					if (this.goodsList[i].selected) {
						if (e && i == index) {
							this.sumPrice = this.sumPrice + (e.detail.value * this.goodsList[i].price);
						} else {
							this.sumPrice = this.sumPrice + (this.goodsList[i].number * this.goodsList[i].price);
						}
					}
				}
				this.sumPrice = this.sumPrice.toFixed(2);
			},
			discard() {
				//丢弃
			},
			getSystemInfo() {
				uni.getSystemInfo({
					success: res => {
						let menuInfo = uni.getMenuButtonBoundingClientRect()
						const topHeight = menuInfo.top * 2 - res.safeArea.top + menuInfo.height
						// console.log('最终高度为:' + topHeight + 'px')
						this.$set(this.top, 'height', topHeight + 'px')
						this.$set(this.top, 'paddingTop', res.safeArea.top + 'px')
					}
				})
			},


		}
	}
</script>
<style lang="scss">
	page {
		background-color: #f7f7f7;
		height: initial;
				overflow-y: initial;
				min-height: 100vh;
	}

	.top {
		// position: fixed;
		top: 0;
		width: 100%;
		color: #ffffff;
		background: url('https://vkceyugu.cdn.bspapp.com/VKCEYUGU-weitao/2d0ca750-0e3d-11eb-b244-a9f5e5565f30.png') no-repeat center / 100% 100%;
		z-index: 1;
		display: flex;
		align-items: center;
		justify-content: center;

		.title {
			display: flex;
			width: 100%;
			font-size: 32rpx;
			letter-spacing: 2rpx;
			font-weight: bold;
		}
	}

	.checkbox-box {
		display: flex;
		align-items: center;

		.checkbox {
			width: 35upx;
			height: 35upx;
			border-radius: 100%;
			border: solid 2upx #f06c7a;
			display: flex;
			justify-content: center;
			align-items: center;

			.on {
				width: 25upx;
				height: 25upx;
				border-radius: 100%;
				background-color: #f06c7a;
			}
		}

		.text {
			font-size: 28upx;
			margin-left: 10upx;
		}
	}

	.status {
		width: 100%;
		height: 0;
		position: fixed;
		z-index: 10;
		background-color: #fff;
		top: 0;
		/*  #ifdef  APP-PLUS  */
		height: var(--status-bar-height); //覆盖样式
		/*  #endif  */
	}

	.header {
		width: 92%;
		padding: 0 4%;
		height: 100upx;
		display: flex;
		align-items: center;
		position: fixed;
		top: 0;
		z-index: 10;
		background-color: #fff;
		/*  #ifdef  APP-PLUS  */
		top: var(--status-bar-height);

		/*  #endif  */
		.title {
			font-size: 36upx;
		}

	}

	.place {

		background-color: #ffffff;
		height: 100upx;
		/*  #ifdef  APP-PLUS  */
		margin-top: var(--status-bar-height);
		/*  #endif  */
	}

	.goods-list {
		width: 100%;
		padding: 20upx 0 120upx 0;

		.tis {
			width: 100%;
			height: 60upx;
			display: flex;
			justify-content: center;
			align-items: center;
			font-size: 32upx;
		}

		.row {
			width: calc(92%);
			height: calc(22vw + 40upx);
			margin: 20upx auto;

			border-radius: 15upx;
			box-shadow: 0upx 5upx 20upx rgba(0, 0, 0, 0.1);
			display: flex;
			align-items: center;
			position: relative;
			overflow: hidden;
			z-index: 4;
			border: 0;

			.menu {
				.icon {
					color: #fff;
					font-size: 30upx;
				}

				position: absolute;
				width: 30%;
				height: 100%;
				right: 0;
				display: flex;
				justify-content: center;
				align-items: center;
				background-color: red;
				color: #fff;
				z-index: 2;
			}

			.carrier {
				@keyframes showMenu {
					0% {
						transform: translateX(0);
					}

					100% {
						transform: translateX(-30%);
					}
				}

				@keyframes closeMenu {
					0% {
						transform: translateX(-30%);
					}

					100% {
						transform: translateX(0);
					}
				}

				&.open {
					animation: showMenu 0.25s linear both;
				}

				&.close {
					animation: closeMenu 0.15s linear both;
				}

				background-color: #fff;

				.checkbox-box {
					padding-left: 20upx;
					flex-shrink: 0;
					height: 22vw;
					margin-right: 20upx;
				}

				position: absolute;
				width: 100%;
				padding: 0 0;
				height: 100%;
				z-index: 3;
				display: flex;
				align-items: center;

				.goods-info {
					width: 100%;
					display: flex;
					padding-right: 20upx;

					.img {
						width: 22vw;
						height: 22vw;
						border-radius: 10upx;
						overflow: hidden;
						flex-shrink: 0;
						margin-right: 10upx;

						image {
							width: 22vw;
							height: 22vw;
						}
					}

					.info {
						width: 100%;
						height: 22vw;
						overflow: hidden;
						display: flex;
						flex-wrap: wrap;
						position: relative;

						.title {
							width: 100%;
							font-size: 30upx;
							display: -webkit-box;
							-webkit-box-orient: vertical;
							-webkit-line-clamp: 2;
							// text-align: justify;
							overflow: hidden;
						}

						.spec {
							font-size: 24upx;
							background-color: #f3f3f3;
							color: #a7a7a7;
							height: 30upx;
							display: flex;
							align-items: center;
							margin-top: 10rpx;
							padding: 0 10upx;
							border-radius: 15upx;
							margin-bottom: 20vw;
						}

						.price-number {
							position: absolute;
							width: 100%;
							bottom: 0upx;
							display: flex;
							justify-content: space-between;
							align-items: flex-end;
							font-size: 28upx;
							height: 60upx;

							.price {
								color: crimson;
								font-size: 34rpx;
							}

							.number {
								display: flex;
								justify-content: center;
								align-items: flex-end;

								.input {
									width: 60upx;
									height: 60upx;
									margin: 0 10upx;
									background-color: #f3f3f3;

									input {
										width: 60upx;
										height: 60upx;
										display: flex;
										justify-content: center;
										align-items: center;
										text-align: center;
										font-size: 26upx;
									}
								}

								.sub,
								.add {
									width: 45upx;
									height: 45upx;
									background-color: #f3f3f3;
									border-radius: 5upx;

									.icon {
										font-size: 22upx;
										width: 45upx;
										height: 45upx;
										display: flex;
										justify-content: center;
										align-items: center;

									}
								}
							}
						}
					}
				}
			}
		}
	}

	.footer {
		width: 92%;
		padding: 0 4%;
		background-color: #fbfbfb;
		height: 100upx;
		display: flex;
		justify-content: space-between;
		align-items: center;
		font-size: 28upx;
		position: fixed;
		bottom: 160upx;
		z-index: 5;

		.delBtn {
			border: solid 1upx #f06c7a;
			color: #f06c7a;
			padding: 0 30upx;
			height: 50upx;
			border-radius: 30upx;
			display: flex;
			justify-content: center;
			align-items: center;
		}

		.settlement {
			width: 60%;
			display: flex;
			justify-content: flex-end;
			align-items: center;

			.sum {
				width: 50%;
				font-size: 28upx;
				margin-right: 10upx;
				display: flex;
				justify-content: flex-end;

				.money {
					font-weight: 600;
				}
			}

			.btn {
				padding: 0 30upx;
				height: 50upx;
				background-color: #f06c7a;
				color: #fff;
				display: flex;
				justify-content: center;
				align-items: center;

				border-radius: 30upx;
			}
		}
	}

	.titile {
		// justify-content: space-around;
		margin-top: 100rpx;
		margin-bottom: 20rpx;
		margin-left: 38%;
		color: #333;
		font-size: 28rpx;
		font-weight: bold;

		image {
			width: 36rpx;
			height: 24rpx;
		}
	}

	.recommend {
		padding: 40rpx 0;
	}
</style>
